A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
AIRBORNE ACOUSTIC ABSORBER
Airborne acoustic absorbers include periodic arrays of Helmholtz resonators that are covered and/or partially filled with an acoustically absorptive material, such as a thermoplastic foam. The combined structures have much broader frequency ranges of high acoustic absorption than do structures having only Helmholtz resonators or acoustically absorbing foam.
AIRBORNE ACOUSTIC ABSORBER
Airborne acoustic absorbers include periodic arrays of Helmholtz resonators that are covered and/or partially filled with an acoustically absorptive material, such as a thermoplastic foam. The combined structures have much broader frequency ranges of high acoustic absorption than do structures having only Helmholtz resonators or acoustically absorbing foam.
AIRBORNE ACOUSTIC ABSORBER
LEE TAEHWA (author) / IIZUKA HIDEO (author)
2019-10-31
Patent
Electronic Resource
English
IPC:
G10K
Tonerzeugungsvorrichtungen
,
SOUND-PRODUCING DEVICES
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
ACOUSTIC ABSORBER AND USE OF SAID TYPE OF ACOUSTIC ABSORBER
| European Patent Office | 2016